Quantitative Aptitude - Arithmetic Ability Questions

30% discount is offered on an item. By applying a promo code the customer wins 20% cash back. What is the effective discount?

The angle of elevation of the top of a hill at the foot of the tower is 60 deg and the angle of elevation of the top of the tower from the foot of the hill is 30 deg. If the tower is 50 m high, what is the height of the hill?

The 3rd and 8th term of an arithmetic progression are -14 and 1 respectively. What is the 11th term?

Determine the value of 'x' in x = 11+2+12+3+13+2

If -3[1-(x/2)] + 5x/3 = 1/6, then what is the value of x?

If a2+1=9a, (a≠0) then the value of a2+1a2 is

A right circular cylinder has height as 18 cm and radius as 7 cm. The cylinder is cut in three equal parts (by 2 cuts parallel to base). What is the percentage increase in total surface area?

ABC is an equilateral triangle and P is the orthocenter of the triangle, then what is the value (in degrees) of ∠BPC?